Oxidation of primary alcohol gives________________?
(A) ketone
(B) Aldehyde
(C) Alkene then – COOH
(D) Ester
Which of the following compounds has the empirical formula CH2O and reacts with sodium hydroxide ?
(A) carbonic acid
(B) ethanol
(C) acetic acid
(D) methanoic acid
Aldehyde and ketone have same general formula for homologous series_________________?
(A) CnH2nO2n
(B) CnH2n
(C) CnH2nO
(D) CnH2nOn+1
On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
(A) pink
(B) black
(C) yellow
(D) brick red
Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?
(A) 60%
(B) 50%
(C) 52%
(D) 8%
Formaldehyde and lactose are combined to produce throat lozenges named as__________________?
(A) formamint
(B) lactomint
(C) aldomint
(D) formalactose
Which of the following do not give aldol condensation reactions ?
(A) formaldehyde
(B) acetaldehyde
(C) diemthyl ketone
(D) propionaldehyde
Which of the following reagents will react with both aldehydes and ketones ?
(A) Grignard reagent
(B) Tollens reagent
(C) Fehlings reagent
(D) Benedicts reagent
Which of the following reactions may be assoclated with aldehyde and ketone ?
(A) nucleophile addition
(B) polymerization
(C) oxidation
(D) all of the above